Lunar Astronomy & Synodic Metrology
Moon Phase & Lunar Calendar Calculator
Calculate current moon phase, illumination percentage, lunar age, and upcoming full/new moon dates with high astronomical precision.
Select Date for Lunar Ephemeris
Upcoming Primary Lunar Events
Next Full Moon 🌕
Oct 25, 2026 (20 days)
Next New Moon 🌑
Oct 10, 2026 (5 days)
🌘
Current Synodic Phase
Waning Crescent
A slender sliver visible before dawn as the cycle nears completion.
Illumination
25%
Moon Age
24.6 days
Astronomical Constants & Orbit Parameters
Synodic Period29.53059 Days
Sidereal Period27.32166 Days
Julian Date (JD)2461319.00
Average Distance384,400 km